Question

a particle executes shm its amplitude is 4cm andt=4sec what time it will take to move from positive extreme to half amplitude

Answer 1

Its time period is 4 sec that is one occliation in 4 second
I.e.to move 4*4=16 com it will take. 4 sec so to move 2 cm 0.5 sec
From +ve extreme to Half amplitude uts 2 cm